Delete all deals in Highrise by 37Signals (basecamp.com)

delete-highrise-deals.js

/**
 * This script should be pasted into a Browser debug console
 * after clicking the Highrise links to show all deals.
 *
 * It may need to be run several times to deal with the massive amount
 * of AJAX queries.
 */

// Inject jQuery
var s=document.createElement('script');
s.setAttribute('src','//code.jquery.com/jquery.js');
document.getElementsByTagName('body')[0].appendChild(s);

// Give jQuery time to load
setTimeout( function(){

	var $ = jQuery;

	// Select all deal links
	$('tr.deal h3 a').each(function(){
		var baseUrl = $(this).prop('href');

		// Load the confimation page
		$.get( baseUrl + '/confirm_destroy', function( data ) {
			var $html = $(data);

			// Submit the confirmation form
			var $form = $html.find('div.submit form');
			$.post( baseUrl, $form.serialize() );
		} );
	});

}, 3000 );

Many thanks for sharing this gist! It's absurd that highrise doesn't provide a bulk delete :/